Tag: fungus

Canon EF lens 35-80mm

As the listing stated:

Needs opening cleaning and fixing sounds like something loose so selling as a repair project cheap.

EBay
Canon EF lens 35-80mm

No error code so in theory this should be an easier fix, however the fact that something is moving about inside tells me there could be more wrong with it than expected.

I now have the lens in front of me so here is what I can see.

Shake rattle and roll

Well, it certainly does rattle, something quite significant is moving about inside. When Connected to a camera you can’t focus or zoom so something in there is restricting movement. There is also fungus on the lens so this one will need to be carefully dismantled and cleaned throughout.

Fungus in the rear of lens
Fungus from front of lens

About 10 small screws later I am into the internal parts of the lens and the cause of all the rattling becomes apparent. A piece of the internal zoom mechanism has broken off stopping the zoom from smoothly operating through its range.

The piece that was broken

The part of the barrel that the item had snapped off was broken due to forceful action with the previous owner. There are two options here, junk the lens or see if it can be saved, I went for the latter. I mixed some epoxy resin and fixed the piece back into place also gluing it to a part of the mechanism that was not liable to hinder future movements. I left this for a couple of hours to cure.

Epoxy resin and wait
Lens internals

Whilst waiting for the glue to cure I used a mixture of water and hydrogen peroxide to clean all the lens elements. I thoroughly dried them and gave a quick polish and reassembled them into the casing. The glue was dry now so I was careful to reassemble the lens not damaging any ribbon cables or contacts along the way. The lens looks lovely and clear of any fungus now.

Fungus gone front
Fungus gone rear

I’ve put the lens onto a test camera and it’s fantastic. I couldn’t get focus when I unpacked the lens but now I have the full range of action and a lovely clean working lens for very little outlay and probably just 2 to 3 hrs of maintenance. Well worth it in my opinion. I wanted a good cheap lens to test my old stock and I now have one that I can easily sell on at some point, on top of that I’ve learnt a lot from working on one of these lenses. I’m certainly going to attempt working on more in the future.

Perfectly good working lens

Thanks for passing by. Always appreciated.

Halina A1 Reflex fungus clean

So tonight I have brought my smallest set of screwdrivers and other tools in to work to continue work on the old Halina project I have been immersed in. Tonight between jobs I intend to deal with the fungus issue on the taking lens.

Fungus removed with peroxide
Halina A1 Reflex viewing lens

I have previously removed the camera faceplate and the two lenses are connected to this. On the rear of the faceplate is a brass connector that when removed allows you into the back of the taking lens into the shutter curtain and aperture curtain.

This allowed me to dry clean as such both curtains and I used a little graphite dust (tiny tiny proportion) to lubricate both curtains and finally after many years allowing the shutter to work as it should. A good blow with some compressed air dealt with any remaining dust.

With the setting on “B” I was able to access the lens element in front of the curtain, this was cleaned with a 50/50 mix of peroxide and distilled water to remove the offending fungus. I allowed this to dry and lightly polished the element with a cotton bud when dried. Again compressed air was used to finish.

Halina A1 Reflex Lens fungus
Halina A1 Reflex taking lens minus fungus
Before and after

I repeated the above for the other two elements of the lens (this is a three element lens) and then did the same with the viewing lens.

When reassembling it’s important to ensure the elements are fully dry. The elements were all wiped over before reassembly and given a last blow prior to being resealed and checked with a bright light.

Fungus removed from Halina A1 Reflex

This was the job I was most concerned with but thankfully it went well and I am pleased with the outcome. The fungus issue has now been eradicated and hopefully it will stay away. Just a couple of little jobs to do now prior to reassembly of the camera and we can then put the new leatherette on the body.

Thanks for passing by, always appreciated 👍

Halina A1 Reflex shutter and Fungus

Managed to get the shutter firing after a while of blasting with compressed air and constantly cocking and firing the mechanism until it clicked into life. Probably stiff due to not being used for a number of years and left in storage. When I get the unit apart I will help it along with a little clock oil.

Halina A1 Reflex lens fungus

When shining a light through the back of the camera with the shutter open the fungus issue on the lens is most apparent, this is a three part lens I believe so it’s going to take some time and patience to achieve, but it’s do able, but it will have to wait a while.

Shine a light for all to see…..fungus

So I’ll leave you with this for today, the smell of years of dampness invades when ever I get this camera out of its box and to be honest I think that will be my biggest challenge with this unit. Any ideas and tips on how to assist with this problem gratefully accepted 👍